Bottle-cap.



l. B. ROSEN'CRANTZ. v

BOTTLE CAP.

APPLICATION FILED JUNE 27. 1914.

1 ,153306. Patented Sept. 14, 1915.

WITNESSES IN VE IV TOR forming a part of this specification and in UNITED STATES PATENT OFFICE.

rsxnon B. R sENcRANTz, OF NEW YORK, N. Y., ASSIGNOR To THE PATENT PRODUCTS CORPORATION, a CORPORATION or DELAWARE.

BOTTLE-CAP.

Specification of Letters Patent.

Patented Sept. 14, 1915.

Application filed June 27, 1914 Serial No. 847,579.

The invention relates to caps which are' particularly adaptable for use to close or seal bottles, and the construction is'of the type which is generally known as Crown seals.

The object of the present invention 1s to construct such a cap so that it can be readily assembled in place on the mouth of the bottle, and comparatively easily removed therefrom without destroying the cap, whereby it can be readily reassembled in place in order to seal or close the bottle after a part of the contents have been removed or after the bottle has been refilled, to secure an improved sealing action of the cap; to do this by distorting the metal of the cap so as to vary the force exerted along radial lines when the bulge of the cap is sprung from one position to the other; to provide the bulge of the cap, for this purpose, with a circumferential series of indentations; to thus secure increased efliciency, l'ow cost and ease of operation, and to obtain other advantages 'and results as may be brought out in the following description.

As showing a specific embodiment of the invention reference is made to the drawing which drawing p w Figure 1 is a view of the mouth portion of a bottle with a cap embodying my invention in place thereupon. Fig. 2 is a view of the mouth portion ofthe bottle with the cap shown in section in place thereupon. Fig. 3 is a plan view of the blank. or disk from :which the metal portion of the cap, is made.

Fig. 4 is a plan view of the cap after the holding claws have been bent from their positions shown in Fig. 3 to their final positions as shown in Fig. 5. Fig. 5 is a sectional viewshowing the cap prior to its being placed in sealing position on the bottle. Figs. 3, 4 and 5 show the parts 1n larger proportions than in Figs. 1 and 2.

The mouth of the bottle is indicated by ber or resilient disk 3 and preferably the sealing disk 4. It will be observed that the resllient metal disk 3 has the central portion '5 thereof which is thinned and bulged and also has integral with this bulged portion the depending claws 6 that extend over and engage the under side of the flange or rib portion 7 at the upper part of the mouth of the bottle. The sealing disk is inserted at the under side of the resilient member 3 betweenthe depending claws thereof.

From an inspection of Fig. 3 it will be observed that the various claws are separated as by notching at 8, while the disk' 3 is comparatively flat, and that subsequently these claws 6 are bent so as to assume the depending positions shown in either Figs. 2 or 5. In order that there may be no interference between the free ends of the claws, and also in order that they may present a neat and finished appearance, they are rounded orcut away as at 9. As above stated, these claws are all integral with the central bulged portion 5, and when the bottle cap is sealing'or closing the bottle the bulged portion extends outwardly, thus maintaining the depending claws 6 in engagement with the under side of the rib 7. This bulged portion also causes the depending claws to press against the rib 7 with suflicient force to maintain the sealing disk 4 firmly against the top of the bottle whereby said bottle' will be effectively closed and sealed. The bulging outwardly of this central portion also locks the claws in this holding position until they are released by the pressing inwardly, or in other words prws ing downwardly, against the central pm tion 5. When the pressure is applied to this central portion. 5 the force is transmitted radially toward the claws and the result is, when the bulged portion is forced to assume the position shown in Fig. 5, it has transmitted the force to these claws in a manner to cause them to assume the position shown in Fig. 5. In other words it has caused the depending claws 6 to move away from engagement with the rib 7 and they will stay in this position until the outer edges of the cap are forced downwardly thus causing the bulged portion to assume the position shown in Fig. 2 whereby the claws 6 will engage when its bulge is sprung from one position to the other, graphically indicated by the lines Y on Fig. 4, and my investigations indicate that'anjy'kind of a distortion which varies the nature of the metal for a portion of some of-its radial lines will effect the results stated. I prefer, however, to form indentations in the metal of the cap, as by stamping, and in the drawing I have shown indentations 10 which are spaced from each other in a circumferential series located near the periphery of the disk, each indentation being elongated transversely of the radial lines passing through it. I- have shown three of these indentations 10, but I do not wish to be understood as restricting myself to any particular number of them.

When the disk of a cap is provided with indentations as shown in my drawing it acts with greatly increased force and sealing power, so that even though before being provided with indentations it would not effect a closure which would be proof against gasimpregnated liquids, such as beer, it will after being provided with the indentations form a tight and impervious closure;

It is manifest that various modifications and changes may be made without departing from the spirit and scope of my invention,'for instance the shape, depth, position and so forth of the indentations and in fact the entire form of the distortion can be changed, so long as the metal is structurally affected so as to Secure the results set forth herein, and I do not wish to be understood as limiting myself in any way except as required by the following claims when construed in the light of the prior art.

I claim: .1

1. A bottle closing cap comprising a resilient disk having a central bulged portion capable of being sprung from outward bulging position to inward bulging position and vice versa, and claws integral with said central portion and depending from the peripherythereof, said claws being separated from each other and the free ends of said claws when the bulge is being sprung out wardly moving toward the center of the bulged portion on which they are arranged and 'when the bulge is being sprung inwardly said claws moving away from the center of said bulged portion, the dlsk having a circumferentially discontinuous eccentric distortion arranged and adapted to vary its spring power.

silient disk having a central bulged portion capable of being sprung from outwardbulging position to inward bulging position and vice versa, and claws integral with said central portion and depending from the periphery thereof, said claws being separated from each other and the free ends of said claws when the bulge is being sprung outwardly moving toward the center .of the bulged portion on which they are arranged and when the bulge is being sprung inwardly said clawsmoving away from the center of said bulged portion, the disk hav ing a series of circumferentially elongated and spaced distortions arranged and adapted to vary its spring power.

3. A bottle closing cap comprising a resilient disk having a central bulged portion capable of being sprung from outward bulg:

bottle closing cap comprising a re- 4. A bottle closing cap comprising a resilient disk having a central bulged portion capable of being sprung from outward bulgingcposition to inward bulging position and vice versa, and claws integral with said een-' tral portion and depending'from the periphery thereof, said claws being separated from each other and the free ends of said claws when the bulge is being sprung outwardly moving toward the center of the bulged portion on which they are arranged and when the bulge is being sprung inwardly said claws moving away from the center of said bulged portion, the disk having adjacent its periphery a series of circumferentially elongated and spaced distortions arranged and adapted to vary its spring power. e

5. A bottle closing cap comprising a resilient disk having a central bulged portion capable of being sprung from outward bulg ing position to inward bulging position and viceversa, and claws integral with said central portion and depending from the periphery thereof, said claws being separated from each other and the free ends of said claws when the bulge is being sprung outwardly moving toward the center of the bulged portion on which they are arranged and when This specification signed and witnessed the bulge is being fsprung inwardlyf saig this 25th day of June, A. D. 1914.

claws moving away rom the center'o sai bulged portion, the disk having a circumfer- ISIDOR ROSENCRANTZ' e'ntial series of spaced distortions no two of Signed in the presence of which are in the same diametric line of the EDWIN A. PACKARD,

cap. v G. MGGRANN. 

